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| author | Daniel Wolff |
|---|---|
| date | Fri, 19 Aug 2016 13:07:06 +0200 |
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| children |
| rev | line source |
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| Daniel@0 | 1 <html> |
| Daniel@0 | 2 <head> |
| Daniel@0 | 3 <title> |
| Daniel@0 | 4 Netlab Reference Manual mdndist2 |
| Daniel@0 | 5 </title> |
| Daniel@0 | 6 </head> |
| Daniel@0 | 7 <body> |
| Daniel@0 | 8 <H1> mdndist2 |
| Daniel@0 | 9 </H1> |
| Daniel@0 | 10 <h2> |
| Daniel@0 | 11 Purpose |
| Daniel@0 | 12 </h2> |
| Daniel@0 | 13 Calculates squared distance between centres of Gaussian kernels and data |
| Daniel@0 | 14 |
| Daniel@0 | 15 <p><h2> |
| Daniel@0 | 16 Synopsis |
| Daniel@0 | 17 </h2> |
| Daniel@0 | 18 <PRE> |
| Daniel@0 | 19 n2 = mdndist2(mixparams, t) |
| Daniel@0 | 20 </PRE> |
| Daniel@0 | 21 |
| Daniel@0 | 22 |
| Daniel@0 | 23 <p><h2> |
| Daniel@0 | 24 Description |
| Daniel@0 | 25 </h2> |
| Daniel@0 | 26 <CODE>n2 = mdndist2(mixparams, t)</CODE> takes takes the centres of the Gaussian |
| Daniel@0 | 27 contained in |
| Daniel@0 | 28 <CODE>mixparams</CODE> and the target data matrix, <CODE>t</CODE>, and computes the squared |
| Daniel@0 | 29 Euclidean distance between them. If <CODE>t</CODE> has <CODE>m</CODE> rows and <CODE>n</CODE> |
| Daniel@0 | 30 columns, then the <CODE>centres</CODE> field in |
| Daniel@0 | 31 the <CODE>mixparams</CODE> structure should have <CODE>m</CODE> rows and |
| Daniel@0 | 32 <CODE>n*mixparams.ncentres</CODE> columns: the centres in each row relate to |
| Daniel@0 | 33 the corresponding row in <CODE>t</CODE>. |
| Daniel@0 | 34 The result has <CODE>m</CODE> rows and <CODE>mixparams.ncentres</CODE> columns. |
| Daniel@0 | 35 The <CODE>i, j</CODE>th entry is the |
| Daniel@0 | 36 squared distance from the <CODE>i</CODE>th row of <CODE>x</CODE> to the <CODE>j</CODE>th |
| Daniel@0 | 37 centre in the <CODE>i</CODE>th row of <CODE>mixparams.centres</CODE>. |
| Daniel@0 | 38 |
| Daniel@0 | 39 <p><h2> |
| Daniel@0 | 40 See Also |
| Daniel@0 | 41 </h2> |
| Daniel@0 | 42 <CODE><a href="mdnfwd.htm">mdnfwd</a></CODE>, <CODE><a href="mdnprob.htm">mdnprob</a></CODE><hr> |
| Daniel@0 | 43 <b>Pages:</b> |
| Daniel@0 | 44 <a href="index.htm">Index</a> |
| Daniel@0 | 45 <hr> |
| Daniel@0 | 46 <p>Copyright (c) Ian T Nabney (1996-9) |
| Daniel@0 | 47 <p>David J Evans (1998) |
| Daniel@0 | 48 |
| Daniel@0 | 49 </body> |
| Daniel@0 | 50 </html> |